Index: src/libcschem/concrete.c
===================================================================
--- src/libcschem/concrete.c	(revision 10276)
+++ src/libcschem/concrete.c	(revision 10277)
@@ -180,6 +180,8 @@
 	rnd_event(&sheet->hidlib, CSCH_EVENT_SHEET_PREUNLOAD, NULL);
 	if (sheet->hidlib.project != NULL)
 		rnd_project_remove_design(sheet->hidlib.project, &sheet->hidlib);
+	if (sheet->hidlib.link.parent != NULL) /* NULL for buffers */
+		rnd_conf_state_del_design(&sheet->hidlib); /* also removes curr from rnd_designs */
 	csch_sheet_uninit(sheet);
 	free(sheet);
 }